55297191186 has 16 divisors (see below), whose sum is σ = 122882647200. Its totient is φ = 18432397044.

The previous prime is 55297191181. The next prime is 55297191247. The reversal of 55297191186 is 68119179255.

It is a happy number.

55297191186 is a `hidden beast` number, since 552 + 9 + 7 + 1 + 9 + 1 + 1 + 86 = 666.

It is a super-2 number, since 2×55297191186² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1024022059 = 55297191186 / (5 + 5 + 2 + 9 + 7 + 1 + 9 + 1 + 1 + 8 + 6).

It is not an unprimeable number, because it can be changed into a prime (55297191181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512010976 + ... + 512011083.

It is an arithmetic number, because the mean of its divisors is an integer number (7680165450).

Almost surely, 2^55297191186 is an apocalyptic number.

55297191186 is an abundant number, since it is smaller than the sum of its proper divisors (67585456014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55297191186 is a wasteful number, since it uses less digits than its factorization.

55297191186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024022070 (or 1024022064 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 54.

The spelling of 55297191186 in words is "fifty-five billion, two hundred ninety-seven million, one hundred ninety-one thousand, one hundred eighty-six".